838
CXUS56 KSEW 011044
CLMBLI

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
344 AM PDT THU OCT 01 2026

...................................

...THE BELLINGHAM WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1949 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             89   09/20/1974
                       09/14/1951
 LOW              28   09/27/1972
HIGHEST           72   09/08         MM      MM       85  09/16
                       09/09
LOWEST            41   09/27         MM      MM       43  09/23
AVG. MAXIMUM    66.2               68.1    -1.9     70.0
AVG. MINIMUM    47.8               49.6    -1.8     52.1
MEAN            57.0               58.9    -1.9     61.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.73   2019
 MINIMUM        0.00   2012
TOTALS          4.02               2.01    2.01     1.35
DAILY AVG.      0.13               0.07    0.06     0.05
DAYS >= .01        9               11.0    -2.0        8
DAYS >= .10        5                5.3    -0.3        3
DAYS >= .50        3                1.0     2.0        1
DAYS >= 1.00       2                0.0     2.0        0
GREATEST
 24 HR. TOTAL   1.76   09/28 TO 09/29


DEGREE DAYS
HEATING TOTAL    234                189      45      116
 SINCE 7/1       350                321      29       MM
COOLING TOTAL      1                  4      -3        5
 SINCE 1/1        59                 75     -16       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.8
HIGHEST WIND SPEED/DIRECTION    24/170    DATE  09/02
                                24/170          09/28
HIGHEST GUST SPEED/DIRECTION    36/190    DATE  09/02
                                36/180          09/28

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.38
NUMBER OF DAYS FAIR           14
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          2

AVERAGE RH (PERCENT)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      21     FOG W/VIS <= 1/4 MILE      5
HAZE                      5

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$